FNUS73 KFGF 211241 FWSFGF SPOT FORECAST FOR HEARTLAND...USFWS NATIONAL WEATHER SERVICE GRAND FORKS ND 741 AM CDT FRI MAY 21 2010 FORECAST IS BASED ON IGNITION TIME OF 1130 CDT ON MAY 21. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... WARM AND PARTLY SUNNY WEATHER IS EXPECTED TODAY. THE WEAK PRESSURE GRADIENT DUE TO UPPER MIDWEST HIGH PRESSURE IS A CAUSE FOR CONCERN. THE WINDS WILL BE VERY LIGHT AND VARIABLE THIS MORNING...BUT COULD IMPROVE A BIT BY BURN TIME. WHILE A LIGHT SOUTHEASTERLY WIND IS THE BEST BET NEAR BURN TIME...CANNOT RULE OUT SOME VARIABILITY IF THE WINDS REMAIN TOO LIGHT. THE SPEED SHOULD IMPROVE AND THE DIRECTION BECOME MORE RELIABLE BY 2 PM AS THE MIXING INCREASES. THE GOOD MIXING HEIGHTS WILL HELP DRAW DOWN DRY AIR FROM ALOFT...SO THE MINIMUM RH SHOULD GET DOWN TO NEAR 35 PERCENT. SHOWERS AND STORMS ARE POSSIBLE TOMORROW. THE CLOUDIER SKIES AND INCREASING LOW LEVEL MOISTURE FEEDING IN FROM THE SOUTH WILL RESULT IN MORE ELEVATED RH. .TODAY... SKY/WEATHER.........PARTLY SUNNY. MAX TEMPERATURE.....73-78. MIN HUMIDITY........33-38 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST 5 TO 8 MPH EARLY IN THE MORNING. MIXING HEIGHT.......300 FT AGL INCREASING TO 7200-8900 FT AGL. MIXING WINDS........SOUTHEAST 5 TO 13 MPH INCREASING TO 13 TO 15 MPH IN THE AFTERNOON. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........56 57 58 58 57 55 53 50 48 WEATHER COV..... WEATHER TYPE.... TEMP............64 67 69 72 73 74 75 75 75 RH..............58 53 44 39 39 39 39 38 39 20 FT WIND DIR..SE SE SE SE SE SE SE SE SE 20 FT WIND SPD..5 5 6 6 6 6 7 7 7 20 FT WIND GUST.10 10 10 10 10 10 10 10 10 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY BECOMING MOSTLY CLOUDY. MIN TEMPERATURE.....53-58. MAX HUMIDITY........79-84 PERCENT. WIND (20 FT)........SOUTHEAST WINDS 7 TO 12 MPH. GUSTS UP TO 20 MPH EARLY IN THE MORNING. MIXING HEIGHT.......6800-7900 FT AGL DECREASING TO 600-1000 FT AGL. MIXING WINDS........SOUTHEAST 13 TO 21 MPH INCREASING TO 23 TO 30 MPH LATE IN THE EVENING. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........47 47 49 52 55 58 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............74 70 64 61 58 56 RH..............41 45 57 66 71 78 20 FT WIND......SE 7 SE 7 SE 7 SE 8 SE 9 SE 10 20 FT WIND GUST.10 10 10 15 15 15 .SATURDAY... SKY/WEATHER.........PARTLY SUNNY. CHANCE OF SHOWERS AND THUNDERSTORMS. MAX TEMPERATURE.....79-84. MIN HUMIDITY........38-43 PERCENT. WIND (20 FT)........SOUTHEAST WINDS 18 TO 23 MPH WITH GUSTS TO AROUND 35 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. MIXING HEIGHT.......600-2100 FT AGL INCREASING TO 4900-6000 FT AGL. MIXING WINDS........SOUTHEAST 31 TO 40 MPH SHIFTING TO THE SOUTH 41 TO 44 MPH LATE IN THE AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........60 59 58 59 WEATHER COV.....CHANCE CHANCE CHANCE CHANCE WEATHER TYPE....TSTORM TSTORM TSTORM TSTORM TEMP............55 67 77 81 RH..............84 60 43 46 20 FT WIND......SE 12G20 SE 17G25 SE 21G35 SE 19G30 $$ FORECASTER...GROCHOCINSKI REQUESTED BY...BLAIR MACE TYPE OF REQUEST...PRESCRIBED .TAG 20100521.HEART.01/FGF